@Mark.LancasterThanks for your help!
Here is the paste from the hardware dignostics:
"This Direct3D graphics driver is Microsoft WHQL certified
Graphics Hardware Description:
Intel Corporation Intel(R) UHD Graphics Family
AIRViz Device Manager \ VirtualDeviceDx11
Feature Level 4_5
Performance Mode
Hardware Renderer
OGSScene.dll
Graphics driver file C:\WINDOWS\System32\DriverStore\FileRepository\igdlh64.inf_amd64_f2da37814c36578d\igdumdim64.dll,C:\WINDOWS\System32\DriverStore\FileRepository\igdlh64.inf_amd64_f2da37814c36578d\igd10iumd64.dll,C:\WINDOWS\System32\DriverStore\FileRepository\igdlh64.inf_amd64_f2da37814c36578d\igd10iumd64.dll,C:\WINDOWS\System32\DriverStore\FileRepository\igdlh64.inf_amd64_f2da37814c36578d\igd12umd64.dll is version 24.20.100.6168
The display is using 32-bit color
Inventor Version:
Build: 200, Release: 2019.1.2 - Date: Tue 09/04/2018
64-Bit Edition - 131072.00 GB
Loaded Inventor Add-Ins:
Assembly Bonus Tools
Simulation: Dynamic Simulation
Simulation: Frame Analysis
iCopy
Electrical Catalog Browser
System Information:
Operating System: 64-bit Microsoft Windows 10 Pro (Build 7600)
Language: English
System Manufacturer: LENOVO
System Model: 20KGS5MB00
BIOS: N23ET52W (1.27 )
Processor: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz (1 processor, 4 physical cores, 8 logical cores)
System Memory: 15.857 GB RAM
Graphics Device Information:
Renderer: HAL
Manufacturer: Intel Corporation
Chip Type: Intel(R) UHD Graphics Family
DAC Type: Internal
Graphics HW Memory: 128 MB
Display Mode: 1920 x 1080 (32 bit) (59 Hz)
Graphics driver file: C:\WINDOWS\System32\DriverStore\FileRepository\igdlh64.inf_amd64_f2da37814c36578d\igdumdim64.dll,C:\WINDOWS\System32\DriverStore\FileRepository\igdlh64.inf_amd64_f2da37814c36578d\igd10iumd64.dll,C:\WINDOWS\System32\DriverStore\FileRepository\igdlh64.inf_amd64_f2da37814c36578d\igd10iumd64.dll,C:\WINDOWS\System32\DriverStore\FileRepository\igdlh64.inf_amd64_f2da37814c36578d\igd12umd64.dll
Driver file version: 24.20.100.6168
Driver Date: 14 June 2018 0:00:00 UTC (Coordinated Universal Time)
Direct3D Graphics Device Information:
Adapter Description: Intel(R) UHD Graphics 620
Vendor ID string: 0x00008086
Device ID string: 0x00005917
VendorID: 8086
DeviceID: 5917
SubSystemID: 225c17aa
Revision: 7
Direct3D 10 / DXGI System Information:
Dedicated Video Memory: 128 MB
Dedicated System Memory: 0 MB
Shared System Memory: 7.929 GB
DxDiag System Information:
Operating System: Windows 10 Pro 64-bit (6.2, Build 9200) (17134.rs4_release.180410-1804)
Language: English (Regional Setting: English)
System Manufacturer: LENOVO
System Model: 20KGS5MB00
BIOS: N23ET52W (1.27 )
Processor: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz (8 CPUs), ~2.0GHz
System Memory: 16384MB RAM
Page File: 6595MB used, 12074MB available
DirectX Version: DirectX 12
DxDiag Version: 6.02.17134.0001
DxDiag Graphics Device Information:
DirectX Version: 12.0
DDI Version: 12
DDI Version Number: c
DxDiag WHQL Level: 0
Driver Signed Valid: True
Driver Signed: True
Manufacturer: Intel Corporation
Chip Type: Intel(R) UHD Graphics Family
DAC Type: Internal
Revision: Unknown
Graphics HW Memory: 8246 MB
Display Mode: 1920 x 1080 (32 bit) (59Hz)
Graphics driver file: C:\WINDOWS\System32\DriverStore\FileRepository\igdlh64.inf_amd64_f2da37814c36578d\igdumdim64.dll,C:\WINDOWS\System32\DriverStore\FileRepository\igdlh64.inf_amd64_f2da37814c36578d\igd10iumd64.dll,C:\WINDOWS\System32\DriverStore\FileRepository\igdlh64.inf_amd64_f2da37814c36578d\igd10iumd64.dll,C:\WINDOWS\System32\DriverStore\FileRepository\igdlh64.inf_amd64_f2da37814c36578d\igd12umd64.dll
Driver file version: 24.20.0100.6168
Driver Date: 14/06/2018 01:00:00
WHQL Level: 1
Inventor Options Information:
Options = 0x00000000
Warning Options = 0x00000000
Graphics driver log information:"
Are you using a 3D mouse such as 3D Connexion? -> no
Does this happen on all parts and assembly or only certain ones?-> on all
Also on Tools/Applications options/Display, what do you have for Min Frame Rate?-> looks like 8Hz on the slider
Have you done a Manage/Rebuild on your model?-> yes, did not help
Design Dr. has two small issues, but I don't think these are the problem? Inventor used to run fine for me even with bigger problems...