Once again, I am looking to the forum for some advice on an issue that may or may not be a problem.
We recently upgraded to QlikView 12.100.20100.11 (September 2025 SR1) and noticed that the rate in which the app refreshes the screen seems to be very slow. When opening Qlik desktop the app opens but is not maximised. Just clicking on the maximise button the screen does not refresh quickly or smoothly. A portion maximises and there is a definite pause after which the refreshes again and maximises. This is whithout any .qvw loaded.
It also feels that there is a delay between clicking on a selection and the app responding to the selection just made. While this pause is very short it does add up when making many selections.
I have tested this on our sever where we connect using a remote desktop connection as well as on my i7 laptop and both behave in a similar way.
On the server connection I have tied to reduce screen resolution, but this did not help.
Are there any other setting in Qlik Desktop that will help to improve this aspect of the performance?
Hi JeffreyMuellerDB, I un-installed QlikView desktop from my laptop, deleted any folders that mentioned Qlik or QlikView and re-installed May2024 SR1. I was able to lease a license and tested the screen refresh on the same model on our warehouse server. This difference between the 2 environments is very noticeable with May 2024 being much faster. Previously when I tested using the same version they both seemed to be sluggish. For me that shows that this is definitely an issue with September 2025 SR1. The problem is that Qlik does not recommend running a different version of the desktop and the server. Can any Qlik resource confirm what updates there were in September 2025 that could have caused the refresh rates to be affected. Also could they confirm what the issues will be if you do run an earlier version of the QV desktop on the QV server.
I would go to separate the desktop and the server - excluding any dependencies to each other. Means testing the pure desktop release (with new clean installations) without any licence (PE version) with own created applications on the local storage. Are there then any differences? On top of it the network and all security tools might be disabled - further maybe starting windows within the secured mode and then activating QV - with the aim to exclude any side-effects.
If QV is further slow it's really a bug and if it showed then a normal behaviour the main causes are known and give possibilities for further investigations.
After doing some more research It looks like September 2025 utilizes Skia Library upgrade to version 121.0.0.0. This is a library published by Google to handle graphics in apps including many browsers. There is a suggestion to try different graphics setting for the PC. I tried them all but the graphic performance has not improved. I logged a job with our local Qlik support desk. Lets see where that goes.
The switch of the rendering from GDI to Skia was earlier but it may have further influence to your issues - as well as the change from Webview to Webview2:
