This issue effected me also, and I fixed it by following these steps:
http://ubuntuhandbook.org/index.php/2018/07/fix-screen-tearing-ubuntu-18-04-optimus-laptops/
Does this help for you?
This issue effected me also, and I fixed it by following these steps:
http:// ubuntuhandbook. org/index. php/2018/ 07/fix- screen- tearing- ubuntu- 18-04-optimus- laptops/
Does this help for you?