[Strange Moving Block-like shadows when i turn shadows on in ultra mode latest Firestorm 22/08/2022]

I never turn on shadows because i dont really like them in sl but i did for once and noticed these weird blocky patterns https://imgur.com/a/8UHsIJO                                                              They move with the zoom ive never seen this before in sl in my 15 years of experience im using firestorm viewer latest version as of this post 

my specs are :

GPU : Nvidia GTX 1070

CPU : Intel Core i5-4670

SSD : Samsung 850 Evo 500GB

running windows 10 

does anyone know how to fix this ?

 

[made couch in blender and it got totally deformed]

Hi guys 

im pretty new to uploading mesh but ive done it before and it didnt give me much issues

now i made a mesh couch in Blender and it got totally deformed , like the edges and faces had some weird sluggish effect on them 

yes i did link the parts and it doesnt have too much vertices ( i think ) 

im totally lost as to what the reason is and im kind of sad 

this is the mesh in blender : https://imgur.com/DiVw4zs

this is the mesh in the sl uploader (it looked the same once uploaded btw ) : 

 

https://imgur.com/8F29GiC 

generate normals gives me the same problem

someone please help me , or does anyone know what i did wrong ?