UC1844A: Issues with compensation and IC not providing continuous PWM signals

Hi,

I am using UC3844A IC for my Flyback simulation.

Simulation input conditions, Frequency 200KHz, Output voltage is 20V. and Input current is 0.55A.

Facing following Issues 1. Discontinuous gate pluses, 2. MOSFET draws very high current (18A) and Feedback compensation for 200KHz.

here I am attaching waveforms and circuit for the same.