I just ran a quick test using Casey Muratori's termbench (https://github.com/cmuratori/termbench) you are an order of magnitude slower than Alacritty, and also significantly slower than iTerm. Warp also locks up pretty severely and only shows a new frame once every few seconds during most of the run.
I had a similar experience with AMD back in the day. I was probably a similar age and damaged the pins on my new Athlon XP 2500+. I called them up and they ended up sending me a 2800+ as a replacement.
Alacritty
CPU: Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
VT support: no
ManyLine: 1.5670s (0.0399gb/s)
LongLine: 1.1261s (0.0555gb/s)
FGPerChar: 0.3293s (0.0551gb/s)
FGBGPerChar: 0.6598s (0.0534gb/s)
TermMarkV2 Small: 3.6822s (0.0484gb/s)
iTerm
CPU: Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
VT support: no
ManyLine: 13.2968s (0.0047gb/s)
LongLine: 3.6535s (0.0171gb/s)
FGPerChar: 1.8944s (0.0096gb/s)
FGBGPerChar: 2.8304s (0.0125gb/s)
TermMarkV2 Small: 21.6750s (0.0082gb/s)
Warp
CPU: Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
VT support: no
ManyLine: 9.6199s (0.0065gb/s)
LongLine: 8.3727s (0.0075gb/s)
FGPerChar: 8.1124s (0.0022gb/s)
FGBGPerChar: 6.0873s (0.0058gb/s)
TermMarkV2 Small: 32.1924s (0.0055gb/s)