Apex Legends using way too much CPU - Stutter + Framedrops

My workplace build was a Frankenstein build, currently as follow:

i7-3770K 4,2GHz (bought in 2017 for $150 to replace i5-2320)

Z77A-G45 MSI (bought in 2014 for $80)

4x4Gb DDR3-1600 mix (dual channel enable) (the last 2x4gb bought after i7 purchase)

RX 480 4Gb sapphire nitro (got it less than $200 on q4 2016, its a defected 8Gb model)

SSD 256 Gb

HDD 1Tb

PSU 500W FSP Hexa2

My office monitor only can get 1440x900. It work flawlessly getting 80-120 fps (vsync off, everthing set max) and the cpu never go past 50%

My home build is as follow:

Xeon E5-26XXL V4 1,7GHz 12 core 24 threads

Asrock Taichi X99

4x4Gb DDR4-2400 (quad channel enable)

GTX 1060 6Gb Palit

SSD samsung 970 evo 500Gb

HDD 1Tb

My home tv can only get full HD 1080. It also work flawlessly getting 70-120 fps (vsync off, other set max) and the cpu never go past 50% (it only can use 12 threads, not more. My cpu has 12 cores 24 threads but the low clock is mainly the cause to lower fps than my workplace build). I got the cpu dirt cheap for trial and error any my curiosity. 

My suggestion for all i5 users with 4 core 4 thread, please accept the fact that 4 threads are not the sweet-spot anylonger. My 2012 released i7-3770k (buy used to replace i5-2320) can still perform better than any 2016 i5 4 threads in any games that can optimized more than 6 threads. The best suggestion to get used and cheap i7 (non K  is still better, even xeon) that your current motherboard can handle. If you have more money, upgrade the motherboard and cpu with more threads (although I predicted ixxxl want to schemed more money by reducing multi threads on 9th generation i7 and only gave them on i9). 

My own experience from upgrading i5-2320 to i7-3770K shows in Battlefield 1. Using the same spec, only cpu change, the fps gets double from 25-40 fps to 50-85 fps ( I used user.cfg to enable battlefield 1 using 8 threads, default only 6 threads which I believe another scheme made by ixxxl who made i5 8th gen with 6 core 6 thread). Its just shows how the big different between 8 threads and 4 threads. 

PS: My xeon is a funny case for its only has 1,7GHz but still able to play any game I throw at it, although I believe it will not optimized the gpu beyond gtx 1060. Normally it shouldn't even play any game with 1,7GHz. So far playing VR (fallout 4 VR) on it also have good result.