Let me share my personal experience. In short, the main issue is that to access SLR in 'Korea', you need to bypass the SNI block. During this process, I discovered that the pass-through mask is delayed.
To access the site, you need to bypass HTTPS, which seems to cause packet damage and delays. Additionally, the program needs to be run on a standalone VR device, and it appears that this program's interaction with the CPU or RAM exacerbates the errors.
I tried using an HTTPS bypass APK that utilizes SNI bypass, but most of them were outdated and not properly updated. Personally, I found Cloudflare's WARP to be quite effective. It had the lowest latency when used with the Deo VR app.
To complain a bit, the regulations in Korea are too severe. I understand that neighboring China has similar issues...