I’m using the ImageEn component in Delphi to display PDF files. I noticed the following issue: when the application window takes up about 50% of the screen, scrolling and moving around the PDF is smooth. However, when I resize the window to about 80% of the screen or full screen, the PDF movement becomes noticeably laggy.
Is there any way to optimize ImageEn performance when viewing PDFs in large window sizes? For example, can I:
reduce CPU/GPU load,
enable caching or pre-rendering of pages,
lower the rendering resolution (e.g., DPI or zoom settings),
or use hardware acceleration?
Any suggestions or tips on improving PDF viewing performance in ImageEn would be greatly appreciated.
Search
PDF viewer lag in ImageEn when window size is large
Posted - Oct 06 2025 : 12:00:23
