RGBIC LED control - colours do not match, flickering in the floating effect

Hi everyone,
sorry if I am writing in the wrong thread.
Since yesterday I've been struggling with a problem that seems to have overwhelmed me and the worst thing about it is that I think I know the solution, but for obvious reasons it doesn't suit me.
The issue concerns addressable LEDs specifically RGBIC. Tape 10 m 24V power supply (powered from both sides).
Tuya wifi control.
Distance of tape from power supply and module 2.5 m. Soldered connections
All the leds work, but. They live a life of their own. The colours do not match those in the application, during the floating effect the colours suddenly change and there is a flicker.
While checking I grabbed the connection of the control circuit with my fingers and.... everything returned to normal. I let go - disco. I don't squeeze the wires which would indicate a lack of contact. I just touch them lightly and it works properly. As I don't have that much free time to hold the wires with my fingers, please advise how to fix the problem.

Instead of fingers, insert some sort of (suitable) resistor between the control wire and the plus or minus so you're not constantly holding it with your fingers? Or increase the capacitance with an "electrolyte" on the LED supply? Or change the cable and at least measure the insulation resistance of what cable you have? Does the float effect draw the most power from the power supply in your program or the least - the answer to this question is also important? I hope you gave the control cable only at the input and not also at the end like the power supply? Hence the conclusion that when describing the problem it is necessary to provide as much data and diagram as possible, as well as the power of the power supply used, which is sometimes of considerable significance in this type and similar symptoms, and also important is the power consumed by the LEDs, because 10 metres says nothing about the number of LEDs per one metre and how much current the whole circuit consumes at maximum when fully lit or during the "floating" effect.... Without this, we will not diagnose your problem in a factual way and we will escape into guesses, the same as yours, only it is a pity that you do not share them with us - which looks like you are examining or checking us since:

rzar wrote:

I think I know the solution, but for obvious reasons it does not suit me.

As you have started, please write what solution you are thinking of and why it does not suit you?

>>21063111
I think it's 50 Hz electric field interference. I have the same thing, when I connected an extra 3m in series it became disco. I changed several controllers (the cheaper ones) and always the same thing. I finally bought a WT-SPI controller and now there is peace and quiet. I think that if I gave the signal wire in the screen it would be OK.

@birut Well, isn't an extra 3m of LED an extra (more than enough) load on the driver? Isn't the cheapness of the drivers sometimes indicative of their lower current capacity? I'm thinking all the time of a proper match between the power consumed and the power of the power supply or driver - is there adequate headroom? Troubleshooting here on the electrode is about giving as much detail and data as possible for the devices used: power supplies, controllers and receivers.... Without this, it is sometimes possible to make a false conclusion or false assumption....

>>21063111
I now have another problem, namely the driver in the WiFi network from the Orange fibre modem works and already with the Huawei modem with SIM card can not connect. It finds the device but does not want to install into the Outsmart RGBIC LED application. The wheel spins and when it gets to the end it displays an error that it has not found the device. I have no idea what could be wrong with the Huawei

@birut HUAWEI got angry with GOOGLES and many apps can't be downloaded, installed or work incorrectly - it's a whole story to find sometimes the right app and solution to the problem involving these phones in cooperation with other devices or apps.... I know something about this from experience when I tried to control drones with HUAWEI - I guess it's some kind of sabotage so that I don't send a drone east sometimes.... I just don't know what, why and who would be bothered by proper support for the Outsmart RGBIC LED app?

Already mastered. It turned out to be the mains adapter. The unit was reporting but would not log on. Electrolytes empty - 2.2uF/400v and 220uF/25v, after replacement it worked.