Mac Client Errors

I am having the hardest time with new client on my (2015) MacBook Pro. I want to just give a short description of the problems. I am running mac os sierra (10.12.4) and all errors happen in champ select of any summoner rift match. Most are annoyances while others crash my computer and make it so it doesn't even let me click on out of app os controls such as the top toolbar.

The first error takes place during individual turns both selecting and banning champions. Clusters of pixels will turn a bright white and if these pixels are near the middle of the screen they will rotate with the animations. However they can happen anywhere and can disable functionality of selecting rune pages and masteries.

The second error is random freezing. The app will not accept input but the os will. The client will only unfreeze when I am prompted to ban or champ select. Chat does not update and I cannot change runes masteries or spells.

The final is half the window split diagonally goes black. The computer no longer works and the image is frozen on the screen. Only way to exit is a hard shut down. Upon reboot I get a warning to not shutdown the computer with apps running. This is a macOS warning.

League never gives me any warnings or asks for an error report. Also my games have been crashing without producing bug aplat reports. Has anyone else had these problems? Before the client update and when I use the legacy client the game runs flawlessly. Any input would be greatly appreciated!