Topped off oil, took for test drive and car is abnormally sluggish.

Ghh0st

Title says most of the issue. I'm at about 16k miles on my '13, around 5100 miles from the last oil change and I checked my oil this afternoon after driving to work and letting the car sit for 4 hours. It was around halfway down the dipstick dead center between L and H.

I added around 1/2 a qt of oil which took it to just below the H hole in the dipstick. I then went for a test drive. The car immediately felt underpowered.

I first noticed it when approaching a stop sign. I usually blip the throttle on downshifts to get the RPM's up and when I did that at multiple stops nothing happened. So I decided to leave a stop sign and attempt to drive the car harder than usually by stepping into it. It felt like nothing was there. The car slowly accelerated and felt extremely underpowered. I drove it for 5 miles or so with no improvement.

After I got back to my office building I sat in the parking lot for 10-15 mins and checked the oil level again, it was about 3/4 the way between L and H.

I always check when the car is either cold from the night before or it's sat for at least a few hours.

Oil: Redline Synthetic 5w-30
Miles since last oil change: 5100
Outside Temp: 83 degrees w/ 53% humidity.

I've read on some of the other overfilled oil threads that the ECU might need to be reset? Or that the outside temp is causing an issue?

I drove the car this morning to work and had absolutely no issues. Should I drive the car home after work and siphon / drain some oil out of it? I don't want to risk damaging my engine....

Thanks!