XRDP poor performance for streaming videos

I don't know what to do I spend around 2 weeks setting up XRDP. I have XRDP up and running with Xorg on a 64 core epyc 3 gen. and performance is terrible. The machine's main usage should be as a terminal server for YouTube videos, but it can't handle even a single session ( I am expecting 30). When the video is full screen, it's lagging and input lag is sometimes good but sometimes 10 seconds. Is there any way to increase performance? What I tried: 1. tried xorgxrdp and xorgxrdp-glamor (interestingly, without glamor it's responsive but not usable) 2. for test acceleration with AMD 5600xt - still same 3. server set up with tcp_send_buffer_bytes=4194304 and net.core.wmem_max = 8388608 4. max_bpp=24/32, use_compresion=true/false, crypt_level=none/high 5. audio: tried wia, pulse and pipewire 6. OS Rocky 9.6, Debian 11/12 I hope I didn't miss anything.