strange lag spikes when near redstone clocks

noticed this when updating my command block redstone structures. When player is near a redstone clock, the game seems to generate severe lag spikes. pictures below show debug pie chart and hidden fps graph. spikes get less severe when moving away from the circuit and stop altogether when the circuit stops.1st 2nd and 3rd pictures are of surface level circuit with no attachments. 4th picture is of bedrock level command block circuit.