From the latest changelog I see that native high DPI support has been removed. Would it be possible to implement a configuration switch to activate this again (or similar)? It used to work very well on my device, while with v10.3 everything is blurry.
Native High DPI Support
High DPI support in HeidiSQL had various bugs left when I finally removed it. See the bugtracker with "high-dpi" labelled issues.
But you can configure HeidiSQL to apply application based scaling yourself. See this recent comment for how to do that.
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