Winlator will only run a program at full speed if I’m actively hovering my mouse over it. How to fix?

Pretty much the title. I’m trying to launch duckstation (a playstation 1 emulator) on winlator. It took a bit of messing around till I got it to stop crashing, but when I finally got it to work, I noticed the issue I mentioned in the title. I literally have to actively keep moving my mouse for the program to run at full speed, and I know it’s not hardware related, because when I do, duckstation runs just fine. I assume the issue is that winlator is running Duckstation in “background mode” as it loses focus the moment inputs are dropped, but I couldn’t find a way to change this, so I’m asking here. I tried messing with mouse settings (relative mouse inputs, force warp), but to no avail. I’m using a Redmi 9 even though I’m certain it’s not a hardware issue.

P.S. I’m aware Duckstation is available on android, but there is no netplay support, only on windows.