[Fabric 1.21.1] Immersive Portals 6.0.6 + Effective 2.4.8 causes visual/rendering glitch and extreme lag #324
Description
Fabric 1.21.1 0.16.14
Fabric API 0.116.4
Effective 2.4.8
Immersive Portals 6.0.6
With the above setup (no other mods installed), the "immersive" portals cause horrendous framerate drops and visual rendering glitches. It seems to be limited to when the "window" of the portal is being viewed. By removing Effective the issue no longer occurs.
Video recording of the issue: