Deficiency or nutrient burn?

Yes, to me it does look like burning from over feeding.

It’s like 85% of growers problem This is an overwatering problem. Look at your leaves, they have interveinal speed bumps with wrinkles. Overwatering kills the roots hairs, the main root shaft is absorbing water but the roots hairs can’t fix the minerals (nutrients). CORRECTLY WATER YOUR CANNABIS PLANTS - EVERYTHING YOU NEED TO KNOW : - https://youtu.be/XmMKDyCHA90?si=p9uYgbtSZOCpwiIt The Secret Truth to perfectly watering your cannabis plants : - https://youtu.be/BRO_dmFg8_w?si=5yI3DN3X4TrFKN0m Let the soil dry and back up your light (or dim it to 50%) for 2 weeks.

Looks like K issue, either an actual def, low overall ec, not enough k in your formula, drying back to far, underfeeding or lockout (from mg cal pH overall high ec)

hmm, looks like nutriens burn. Do you use some Spraynutriens ?