Dual booting

I learned how to dual boot windows on my deck to play games with an anti-cheat online. The only problem is it’s slow asf. It’s takes hours to download 20-30gb game and sometimes the desktop lags even just opening something simple like settings.

Haven’t gotten the chance to play a game booted off there, hopeful that it won’t effect in game but guessing that will be slow as well. Will it?

Also, troubleshooting?