2nd ASUS X299 Apex/Intel i9-9940x with Custom water loop/7H-Prem-x64/Corsair 450D case/Ram Trident-z 3600C16 4x8gb / Samsung970Evo plus 500gb SSD/Dual ssd EZ swap evo/PSU EVGA SuperNova 1200w-P2 80+Platinum/GPU Titan Xp /8-ML-140 on push-pull on 2-280GTX rads
Some people say the same thing about win-8.1.
Is this Notebook your Dell M6400 ?
One difference between a computer verses a phone is prepackage software from the manufacture commonly know as junkware,
If ie11 is slow there's usually a good reason why,
The hard part is finding out what,
Another reason the phone might be faster is Security,
What Security is installed on the "Notebook" verses the phone ?
There's some great things to try here so run down the list by the time you finish I'm sure you'll find out what the issues are as to why ie11 is slow, Troubleshooting for win-7, http://www.sevenforums.com/tutorials/220165-troubleshooting-steps-windows-7-a.html
My Computer
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Custom assembled by me :}
OS
Win-7-Pro64bit 7-H-Prem-64bit
CPU
i7-5930K 2nd i9-9940x both water blocked VRM's too
2nd ASUS X299 Apex/Intel i9-9940x with Custom water loop/7H-Prem-x64/Corsair 450D case/Ram Trident-z 3600C16 4x8gb / Samsung970Evo plus 500gb SSD/Dual ssd EZ swap evo/PSU EVGA SuperNova 1200w-P2 80+Platinum/GPU Titan Xp /8-ML-140 on push-pull on 2-280GTX rads