tRPC queries&mutations really slow on Vercel+Planetscale deployment

follow: authedProcedure
    .input(
      z.object({
        id: z.string(),
      })
    )
    .mutation(async ({ ctx, input }) => {
      const userId = ctx.session.user?.id;
      if (!userId) throw new TRPCError({ code: 'UNAUTHORIZED' });
      const user = await ctx.prisma.user.findUniqueOrThrow({ where: { id: input.id } });
      const userFollow = await ctx.prisma.userFollow.upsert({
        where: { followerUserId_followTargetUserId: { followerUserId: userId, followTargetUserId: user.id } },
        create: { followerUser: { connect: { id: userId } }, followTargetUser: { connect: { id: user.id } } },
        update: { followerUser: { connect: { id: userId } }, followTargetUser: { connect: { id: user.id } } },
      });
      return {
        userFollow,
      };
    }),