PP 2020 unresponsive to mouse clicks, exhibiting "ghost" Behavior

Hey all,

CRUX OF THE ISSUE: Mouse clicks do not produce expected response in Premiere, if any response at all. Clicking different open sequences reverts back to the first opened sequence. In sequence settings, the only responsive buttons are "Cancel" and "OK". Clicking dropdowns are unresponsive, but instead, hovering mouse over dropdowns or dimensions/resolution input field cycles through menu options/numbers.

HARDWARE:
iMac with 3.5 GHz Intel Core i5 processor

Memory: 32 GB 2400 MHz DDR4 

ATTEMPTED FIXES: 

Switched project files

Created new project files

Restarted program while erasing preferences

Restarted computer

Wiped Media Caches

Restarted computer
Uninstalled PP2020
Uninstalled entire Adobe Cloud and cleaned using Adobe Cleaner script.

Restarted computer

THE STORY

I'm experiencing a crushing issue in Premiere Pro 2020. When I opened my file this morning, I noticed Linked files were taking a long time to load but didn't think much of it. I recently swapped this project over to a new hard drive and it had to search to link the files, so I figured that would be resolved once it found everything. I clicked through the locate files dialog box and entered my project. I attempted to click through my timeline when I started to notice this issue. My mouse clicks within premiere pro (and only in premiere pro) were exhibiting laggy behavior. In many instances, clicking in the timeline or into the Project window produced no response from the program. 

I thought I might be having an issue with preview files from switching to the new drive, so I jumped into my sequence settings. Sequence settings buttons and dropdowns were unresponsive at first. Then I noticed that if I hovered my mouse over the dropdown menus, dropdowns would cycle through their options. In the input fields for dimensions, the numbers would increase if I hovered my mouse over them. I opened up different projects, and even tried creating new projects and I am experiencing identical and unexplained behavior. I've tried many fixes, up to wiping and reinstalling the entire creative cloud on my iMac. That did nothing for this issue, which makes me think this is an issue with another program, driver, plugin, or who knows what playing badly with Premiere. 

I'm not quite sure what to do next as I haven't seen any similar issues in the forums. I'm thinking my next steps probably have to do with updating or reverting drivers, but we're really starting to get out of territory I am familiar with, especially since I am still learning and becoming familiar with iMac (learned editing and computers on PC, had to switch to Mac for work last year.)

Thanks for any help you might provide!