Hi. I have 3 LED down lights running off an electronic transformer. The lights pulsate when they heat up (I assume due to the low voltage that they draw).
How can I stop them from flashing as it is very irritating?
Thanks

Heat is the enemy of LED, and must be able to dissipate, so be sure the LED fixtures have proper spacing to allow heat to escape.

Be sure the transformer is sized to handle the load of these fixtures.

The area is very well ventilated. When the lights are turned on they work 100% fine for a few minutes. As they heat up the flickering becomes more aggressive.
I'm not sure of the rating of the transformer but will check.
Is there anything I can add to the system to stabilize it?

Match the transformer to the draw, if the transformer is small you cab replace it with a larger one. My hockey puck under cabinet lights was rated for 5 lights. I triued to add a 6th light and got what you are experiencing.