Hi,
It takes me 5-10 minutes waiting for the online judge to check. After several changes to the code, I still need to wait the same amount of time which is an awful experience! If the website is hosting people that the server cannot accommodate, please either buy more server or set up a priority for the online judge to check who has paid over those who do not. If the speed is still not improved, I believe many people will transfer to another online judge platform.