I do not see any reason for the performance improvement since it is an implementation high performance based on multithreading.
Could you guys go thru it and pin point any issue to improve the performance. Right now it does not pass thru LeetCode Execution using the "Run Code" and "Submit" buttons for a specific test case. It works on my Laptop fine for this test case and it emitts the results fine.
In general it works for input arrays with moderate size. It just times out for larger arrays of input.

Here is specific test case that is planned.
[4,32,23,1,11,21,8,3,12,21,33,5,14,11,9,14,4,27,5,7,7,14,13,9,17,10,3,4,17,31,7,19,4,7,20,5,4,3,24,30,9,11,23,16,7,21,23,22,12,20,8,20,18,11,5,8,21,5,11,31,28,21,13,21,22,3,2,1,32,8,8,27,4,26,13,14,4,15,6,10,28,15,18,20,29,1,1,12,5,18,10,9,5,13,1,2,7,3,23,26,3,4,13,9,32,32,31,26,19,8,7,29,16,21,28,14,18,5,25,3,4,33,27,3,10,10,22,13,13,32,18,11,27,12,3,33,21,3,5,23,12,23,23,20,24,31,26,7,25,1,5,28,1,1,29,7,31,20,21,32,23,24,13,21,14,30,8,5,23,26,31,31,25,33,17,30,20,20,16,16,2,8,10,5,10,16,27,8,25,5,3,22,21,30,25,20,4,10,9,4,3,20,14,13,4,3,3,1,32,29,13,25,13,28,10,26,17,29,13,28,20,22,6,6,2,30,15,2,29,21,10,28,33,22,6,25,8,18,29,17,1,25,17,27,27,28,16,18,3,4,5,28,20,32,11,23,1,33,12,7,29,32,6,33,15,33,24,13,32,15,24,20,11,27,20,7,2,21,6,11,16,27,24,22,7,4,15,16,1,25,22,16,4,9,19,16,10,14,9,30,18,17,6,8,9,23,1,9,22,20,5,1,15,30,23,3,8,10,9,22,24,9,24,9,5,20,27,16,22,7,6,11,22,27,31,16,30,8,14,12,9,2,29,33,13,18,14,30,20,19,16,33,8,31,31,30,6,15,6,2,30,15,32,17,33,14,22,2,4,23,22,21,29,8,31,26,28,26,20,12,12,18,1,20,17,8,10,10,4,5,7,28,8,31,13,11,31,17,27,27,25,10,8,30,12,17,24,19,16,31,28,15,28,17,16,7,16,1,23,7,25,11,5,19,3,1,14,10,29,19,17,29,20,20,24,5,1,29,29,14,16,2,7,29,15,14,18,14,20,4,9,30,8,28,30,18,18,15,20,6,5,2,29,3,1,29,3,6,12,16,20,27,6,5,30,14,3,9,16,15,28,2,11,22,16,12,9,15,10,22,18,13,29,31,26,31,33,21,13,20,20,12,33,15,22,7,31,24,21,21,30,7,25,31,28,25,19,8,27,27,16,31,17,12,20,30,23,15,21,1,6,10,28,10,27,31,24,9,3,23,8,30,31,2,19,8,31,3,16,30,32,1,9,9,10,30,29,12,28,20,32,22,33,2,1,18,33,32,16,9,5,21,27,29,14,6,6,21,13,23,18,15,29,21,32,29,4,9,5,33,22,7,11,17,24,10,13,4,10,1,3,11,8,12,20,18,11,8,2,25,6,25,18,1,1,21,19,11,5,2,12,7,20,20,2,31,14,26,16,15,22,6,27,6,10,20,20,31,20,13,20,12,24,15,16,23,18,3,22,22,8,20,3,5,20,16,11,11,28,2,2,32,18,28,12,32,12,27,26,30,29,4,1,22,14,7,12,23,31,11,18,7,25,12,8,24,9,14,17,25,16,4,3,29,22,17,25,17,26,22,22,19,28,2,17,24,19,18,26,9,4,25,23,15,25,23,24,29,20,18,13,22,11,9,24,12,14,6,1,22,1,21,21,8,13,15,8,29,13,2,8,17,8,27,14,6,9,29,25,31,3,10,22,30,11,19,4,12,10,6,21,27,16,22,8,32,13,6,19,30,29,26,22,2,11,8,28,17,19,10,11,19,33,23,15,12,32,31,20,5,16,11,16,4,13,24,26,18,33,14,30,33,24,19,33,19,12,27,24,29,33,13,14,10,22,25,24,32,18,5,9,6,33,27,31,26,12,16,7,30,3,12,25,11,12,28,31,5,32,13,1,5,3,26,11,25,9,28,16,3,27,13,19,18,16,12,15,18,9,4,25,6,16,14,2,10,20,22,20,20,8,7,7,5,32,30,9,27,33,22,4,13,8,6,11,18,18,27,26,27,25,15,22,16,11,13,15,25,11,29,7,3,15,26,21,27,22,29,11,16,2,25,32,24,17,11,13,15,9,33,31,14,20,22,32,4,25,13,28,33,4,9,16,20,22,6,23,7,18,30,9,12,19,32,27,33,5,22,18,9,9,6,5,5,4,4,33,16,13,5,28,24,24,6,1,14,13,12,15,10,24,22,12,10,31,33,29,24,18,18,13,25,26,32,15,3,14,14,26,19,32,15,33,33,2,6,10,24,21,21,31,31,12,22,12,6,30,32,8,16,24,26,13,13,16,5,17,26,4,4,7,27,27,5,14,24,23,32,13,3,23,10,30,23,31,30,18,25,11,24,21,7,19,13,19,4,28,22,27,2,17,12,33,32,4,25,21,23,24,7,13,21,33,7,33,31,7,20,30,13,22,19,33,16,2,20,4,31,2,31,21,12,24,23,22,2,20,19,15,2,28,4,9,30,15,13,30,4,17,24,13,32,2,12,24,24,19,11,19,6,33,2,9,26,25,16,15,24,6,15,4,28,2,3,32,18,10,2,13,24,16,13,28,28,22,33,25,21,2,5,2,21,1,8,17,2,5,18,33,29,27,20,30,27,23,25,1,8,19,33,22,30,17,24,17,7,16,16,4,25,23,4,31,12,10,30,17,17,14,4,24,10,32,13,14,15,29,17,13,7,4,21,16,23,16,2,13,12,33,23,27,33,28,15,31,25,13,12,20,14,18,18,7,31,3,31,30,33,13,6,26,13,14,33,26,4,17,13,7,15,5,18,19,24,25,15,14,33,19,26,19,16,27,20,12,6,11,6,5,17,29,17,10,25,26,10,6,8,25,5,11,11,7,32,14,2,2,32,25,12,30,20,32,18,30,19,20,30,31,11,21,13,27,22,15,9,26,4,10,4,9,2,5,5,31,14,26,32,8,30,19,16,27,6,4,12,17,18,24,13,17,16,4,5,30,11,21,21,21,4,25,26,13,2,13,2,8,32,6,12,32,9,30,15,24,11,7,26,14,10,10,22,13,28,2,21,20,19,16,1,14,16,1,26,8,3,14,4,20,1,3,21,26,25,20,1,18,17,6,16,8,17,30,24,32,9,4,24,8,23,12,28,4,32,5], 9931

The array has 1385 data points
from this select possible contiguous subarrays and find the product of these which should be less than the given K = 9931

"""
import concurrent.futures
import math
class Solution(object):
def prodSequence(self, seqList):
try:
i, j, K, Arr = seqList[0], seqList[1], seqList[2], seqList[3]
cprod = math.prod(Arr[i:j+1])
#print(cprod,' ', i,' ',j,' ',K,' ',Arr[i:j+1])
if cprod < K:
#print(cprod, " ", Arr[i:j+1])
return Arr[i:j+1]
else:
return []

    except Exception as est:
        print("exception", est)
        pass
    return []

def numSubarrayProductLessThanK(self, nums, k):
        """
        :type nums: List[int]
        :type k: int
        :rtype: int
        """  
        #print("NUMBER ELEMENTS=", len(nums))
        A = nums
        K = k 
        
        aIL = []
        for i in range(0, len(A)):
            for j in range(i, len(A)):
                arrind = [i, j, K, A]
                aIL.append(arrind)
        
       
        prodcnt = 0
        #print("AIL=", len(aIL))
        with concurrent.futures.ThreadPoolExecutor(max_workers=500) as executor:
            future_prod =  { executor.submit(self.prodSequence, elem) : elem for elem in aIL } 

            for future in concurrent.futures.as_completed(future_prod):
                seq = future_prod[future]
                try:
                    data = future.result()
                    if data != []:
                        prodcnt += 1         
                       
                except Exception as exc:
                    print('%r generated an exception: %s' % (seq, exc))
                    pass
         
        return(prodcnt)
        """