Joseph

Update: it was due to my network configurations, my console’s NAT was type F. I added its IP address to my router’s DMZ settings, then it turned to type A and worked. Now I can play online mode smoothly without any issues.

My skin appears correctly in menu but when joining my server it turns to classic

Unfortunately I am having trouble trying to make it happen on purpose in the base game so I can record it.

However I have had it happen a few times playing with no add-ons on but it's rare usually happens when traveling fast like using Elytra with fireworks. Chunks try to load while an auto save is in progress and it either freezes or crashes.

Adding add-ons to your world does make it worse causing it to crash more frequently. I'm aware stacking multple add-ons will cause it's own issues, but I can tell you it does happen often with any add-on that alters structures those being ones like

Eternal End by Panascais

Better Structures Add-on by BLOCKLAB Studios

CAVE BIOMES ADD-ON by Glorious Studios

More Simple Structures by Waypoint Studios

Just one of those add-ons causes it to happen more frequently combining two or more of those together or combining any of those with any number of smaller add-ons will cause it to happen every 10 minutes to every few minutes

you fix Stone smooth texture pixel art on it

I'm playing with sodium and low performance in everything with at best 40fps and frequent lag spikes. Before this update I would be getting 200fps lowest maybe 50fps with the same setup.