applet panel delayed cursors

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What happened?

description :
HI, since last three revisions , last now is v2673, I use the Applet panel detached in the main monitor of 24"
as my old 15" monitor does not fit well all the waterfall&spectrum views.
Well, since the last 3 revisions the detached panel has all commads delayed of about half second or more,
only filters changing is ok.
When the panel is inside of the main window all works ok.
73
Phil
ps: sys is win11
ps2: detached S_meter works ok

------log------------

I'm experiencing an issue with AetherSDR, a Linux/macOS/Windows SDR client
for FlexRadio transceivers (https://github.com/aethersdr/AetherSDR).

My system:

• AetherSDR version: 26.7.3
• Qt version: 6.8.3
• OS: Windows
• Radio: FLEX-8600 fw 4.1.3.39644

Before writing the bug report, please read the AetherSDR project context at
https://raw.githubusercontent.com/aethersdr/AetherSDR/main/CLAUDE.md
for architecture overview, data flow, protocol details, and known issues.

Based on my description below, write a complete GitHub bug report.
Do NOT ask me follow-up questions — just write the best report you can
from what I've provided. Output it in one response, ready to paste.
Use GitHub-flavored Markdown formatting (headers, code blocks, bullet points).

Format it as:

Title: (short, descriptive)

What happened?

(expand on my description with clear, specific language)

What did you expect?

(infer the expected behavior from context)

Steps to reproduce

(numbered steps based on my description)

Radio model & firmware

(pre-filled above)

OS & version

(pre-filled above)

Developer Notes

(After reviewing the codebase, suggest which source files and functions
are most likely involved, what logging categories to enable in
Help → Support to capture diagnostic data, and any potential root causes
based on the code architecture. Reference specific file paths and line
numbers where possible.)

What did you expect?

No response

Steps to reproduce

1. connect the radio
2. detach panel-meters out of main window
3. try to move any cursor, every movement is delayed by almost half a second on my pc
4. only cw-filter works ok
5. enalrging the size of the applet panel makes the issue disappear
6. the upper buttons are working ok

AetherSDR version

26.7.3

Radio model & firmware

flex 8600 v 4.1.3

Operating system

Windows

OS version and hardware

win 11

Reproduce the detached applet panel on Windows with AetherSDR 26.7.3, moving cursors and resizing the panel, then compare it with the embedded panel and detached S_meter. Trace the Qt/C++ event and rendering path for detached applet-panel cursors; done means cursor movement is responsive at the affected size without regressing the embedded panel or filter controls.