Lenovo Yoga 720 new Laptop

hi i just try to switch from my old macbook pro early 2011 512 ssd 16gb ram no retina

to a lenovo yoga 720

• Intel® Core™ i7-7700HQ Prozessor 2,8, Quad-Core
• 39,6 cm (15,6") Ultra-HD 16:9 Touch LED Display, Webcam
• 16 GB RAM, 512 GB SSD, Fingerprint
• NVIDIA GeForce GTX 1050 Grafik (4096 MB), Thunderbolt, USB 3.0, WLAN-a

my workfiles in ps on the new system are slower then they have been on my old mac

i have quite big files of 3200px x 3200 px with 300dpi with several layer groups

just switching on and off these groups i have a lag of up to 4 seconds on the new system

on my old mac it is 1 second

so am trying to find a fix for the lag

so far i switched to admin

i reinstalled the gpu driver several times

i exchanged the lenovo / it had a monitor problem as well

only installed adobe ...

the only solution i found so far was swithing off the gtx 1050 and scaling down to 1980x1200

but for this i dont need a new computer

i chatted with adobe support but unfortunatly they cant help me

Help is very much apreciated

thanks

ps maybe a complete new reinstall without any lenovo software???