diff --git a/src/graphics.c b/src/graphics.c
index 1751f8aea..abe842190 100644
--- a/src/graphics.c
+++ b/src/graphics.c
@@ -1527,15 +1527,15 @@ void draw_grav(pixel *vid)
 	{
 		for (x=0; x<XRES/CELL; x++)
 		{
-			if(fabsf(gravx[y][x]) <= 0.001f && fabsf(gravy[y][x]) <= 0.001f)
+			if(fabsf(gravpf[(y*XRES)+x]) <= 0.001f && fabsf(gravyf[((y*CELL)*XRES)+(x*CELL)]) <= 0.001f)
 				continue;
 			nx = x*CELL;
 			ny = y*CELL;
-			dist = fabsf(gravx[y][x])+fabsf(gravy[y][x]);
+			dist = fabsf(gravyf[(y*XRES)+x])+fabsf(gravxf[(y*XRES)+x]);
 			for(i = 0; i < 4; i++)
 			{
-				nx -= gravx[y][x]*0.5f;
-				ny -= gravy[y][x]*0.5f;
+				nx -= gravxf[((y*CELL)*XRES)+(x*CELL)]*0.5f;
+				ny -= gravyf[((y*CELL)*XRES)+(x*CELL)]*0.5f;
 				addpixel(vid, (int)(nx+0.5f), (int)(ny+0.5f), 255, 255, 255, (int)(dist*20.0f));
 			}
 		}
diff --git a/src/main.c b/src/main.c
index 7a08de7ac..8f67b0550 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1826,9 +1826,9 @@ int main(int argc, char *argv[])
 			if(result) //Did the gravity thread finish?
 			{
 				memcpy(th_gravmap, gravmap, sizeof(gravmap)); //Move our current gravmap to be processed other thread
-				memcpy(gravy, th_gravy, sizeof(gravy));	//Hmm, Gravy
-				memcpy(gravx, th_gravx, sizeof(gravx)); //Move the processed velocity maps to be used
-				memcpy(gravp, th_gravp, sizeof(gravp));
+				//memcpy(gravy, th_gravy, sizeof(gravy));	//Hmm, Gravy
+				//memcpy(gravx, th_gravx, sizeof(gravx)); //Move the processed velocity maps to be used
+				//memcpy(gravp, th_gravp, sizeof(gravp));
 
 				if (!sys_pause||framerender){ //Only update if not paused
 					//Switch the full size gravmaps, we don't really need the two above any more
@@ -2646,7 +2646,7 @@ int main(int argc, char *argv[])
 				sprintf(heattext, "Empty, Pressure: %3.2f", pv[(y/sdl_scale)/CELL][(x/sdl_scale)/CELL]);
 				if (DEBUG_MODE)
 				{
-					sprintf(coordtext, "X:%d Y:%d. GX: %.2f GY: %.2f", x/sdl_scale, y/sdl_scale, gravx[(y/sdl_scale)/CELL][(x/sdl_scale)/CELL], gravy[(y/sdl_scale)/CELL][(x/sdl_scale)/CELL]);
+					sprintf(coordtext, "X:%d Y:%d. GX: %.2f GY: %.2f", x/sdl_scale, y/sdl_scale, gravxf[((y/sdl_scale)*XRES)+(x/sdl_scale)], gravyf[((y/sdl_scale)*XRES)+(x/sdl_scale)]);
 				}
 			}
 		}
diff --git a/src/powder.c b/src/powder.c
index 0633f75e2..b56426b91 100644
--- a/src/powder.c
+++ b/src/powder.c
@@ -1729,13 +1729,13 @@ void update_particles_i(pixel *vid, int start, int inc)
 			if (t==PT_ANAR)
 			{
 				// perhaps we should have a ptypes variable for this
-				pGravX -= gravx[y/CELL][x/CELL];
-				pGravY -= gravy[y/CELL][x/CELL];
+				pGravX -= gravxf[(y*XRES)+x];
+				pGravY -= gravyf[(y*XRES)+x];
 			}
 			else if(t!=PT_STKM && t!=PT_STKM2 && !(ptypes[t].properties & TYPE_SOLID))
 			{
-				pGravX += gravx[y/CELL][x/CELL];
-				pGravY += gravy[y/CELL][x/CELL];
+				pGravX += gravxf[(y*XRES)+x];
+				pGravY += gravyf[(y*XRES)+x];
 			}
 			//velocity updates for the particle
 			parts[i].vx *= ptypes[t].loss;
@@ -1990,7 +1990,7 @@ void update_particles_i(pixel *vid, int start, int inc)
 
 
 			s = 1;
-			gravtot = fabsf(gravy[y/CELL][x/CELL])+fabsf(gravx[y/CELL][x/CELL]);
+			gravtot = fabs(gravyf[(y*XRES)+x])+fabs(gravxf[(y*XRES)+x]);
 			if (pv[y/CELL][x/CELL]>ptransitions[t].phv&&ptransitions[t].pht>-1) {
 				// particle type change due to high pressure
 				if (ptransitions[t].pht!=PT_NUM)
@@ -2354,8 +2354,8 @@ killed:
 										pGravX = ptGrav * ((float)(nx - XCNTR) / pGravD);
 										pGravY = ptGrav * ((float)(ny - YCNTR) / pGravD);
 								}
-								pGravX += gravx[ny/CELL][nx/CELL];
-								pGravY += gravy[ny/CELL][nx/CELL];
+								pGravX += gravxf[(ny*XRES)+nx];
+								pGravY += gravyf[(ny*XRES)+nx];
 								if (fabsf(pGravY)>fabsf(pGravX))
 									mv = fabsf(pGravY);
 								else
@@ -2413,8 +2413,8 @@ killed:
 											pGravX = ptGrav * ((float)(nx - XCNTR) / pGravD);
 											pGravY = ptGrav * ((float)(ny - YCNTR) / pGravD);
 									}
-									pGravX += gravx[ny/CELL][nx/CELL];
-									pGravY += gravy[ny/CELL][nx/CELL];
+									pGravX += gravxf[(ny*XRES)+nx];
+									pGravY += gravyf[(ny*XRES)+nx];
 									if (fabsf(pGravY)>fabsf(pGravX))
 										mv = fabsf(pGravY);
 									else